Today, our girl turns the big 2-1! While she will probably be partying the night away later, she has a busy schedule ahead of her. Secret Life wrapped its final season last week, but her big breakthrough is on the horizon. Shai recently signed on to the Young Adult novel adaptation of Divergent and will also play Mary Jane Watson in The Amazing Spider-Man 2! By the time she turns 22 next year, she could be the next Jennifer Lawrence.

Check out her transformation through the years in the gallery, and then hit the comments with your birthday wishes for Shailene!